GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 5590 Crankshaft Gear Installer

Removal Procedure


    Object Number: 69450  Size: SH
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Remove the engine front cover. Refer to Engine Front Cover Replacement .
  3. Remove the crankshaft position sensor reluctor ring.

Installation Procedure


    Object Number: 480576  Size: SH

    Notice: Failure to properly align the crankshaft position sensor reluctor ring may result in component damage and effect OBD II system performance.

    Important: The crankshaft position sensor reluctor ring is shaped like a dish. The dish must face the engine front cover.

  1. Install the crankshaft position sensor reluctor ring, using J 5590 .
  2. Align the keyway on the crankshaft position sensor reluctor ring with the woodruff key, the crankshaft balancer, in the crankshaft.
  3. Push the crankshaft position sensor reluctor ring onto the crankshaft until completely seated against the crankshaft sprocket.
  4. Install the engine front cover. Refer to Engine Front Cover Replacement .
  5. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.